how to use "t3_bs3_blank" to building own template?

hi everyone:

I learn t3 template only 3 months, but i love it, It will bring you a lot of surprises.

In this three-month period, I did not find a template to make your own with t3_bs3_blank detailed methodology and Tutorials.

For example:

I would like to navigate menus and LOGO on the line, how should I modify it?

If i turn on the development model, where to modify LESS file is to specify the t3-assets / dev folder modifications, or to the template / less modified?

If I already have a front-end HTML code, how to show it with t3 framework?

So I do not know how to do, I need to get to joomla detailed tutorial and not simply tutorial.

someone can help me? because I really have no idea about this

I really need help!!!